Kumasi
Ghana
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Kumasi, Ghana

Kumasi has a tropical wet and dry type of climate (Köppen climate classification Aw) with hot conditions for the majority of the year. Kumasi, the second-largest city in Ghana, lies in the Ashanti Region in the south-central part of the country. The proximity to the equator and the water body of the Gulf of Guinea, as well as the dry Saharan winds, chiefly influence the climate of the city.

Kumasi, the Garden City, stands at an average altitude of 250 meters above sea level. The topography is a combination of hilly terrain and agricultural lands with rich fertile soil. The city lies near a rain forest region with a thriving natural habitat that consists of many species of plants and flowers. Kumasi is only 19 miles away from Lake Bosumtwi, a natural crater lake, and hardly 300 miles from the equator. The region is famous for its historic sites, wildlife, and natural reserves.

Kumasi has two different seasons: a long, wet season from March to November and a short, dry season from December to February. Temperatures average range from 21.1°C (70°F) to 32.8°C (91°F) in the wet season and 20.6°C (69.1°F) to 33.3°C (91.9°F) in the dry season. Northeasterly trade winds that blow from the Sahara towards the Kumasi region are the main feature of the dry season. Extreme variation from mean temperatures is rare.

Kumasi receives ample rainfall of 1397mm (55") annually, with 90% registering during the rainy season. August has a relative pause in precipitation and separates the rainy season into two parts. The annual sunshine records 1952 hours with a peak from February to April and the trough from June to August. The sunrays are intense throughout the year as the ultraviolet index ranges between an extreme 10 to 12.

The highest temperature on record for Kumasi is 37.8°C (100°F), while the record for the lowest temperature is 10.6°C (51.1°F).
The best time to visit Kumasi is from December to February during the dry season. The temperatures are slightly lower than the wet season, but the main difference is the drop in humidity and rainfall. The sunlight lasts for at least 6 hours every day, and the conditions are comfortable except for the dry winds that blow during the season. The dry season means fewer mosquitoes than the rainy season and makes the ubiquitous umbrella disposable.

The worst time to visit Kumasi is during the wet season, especially from March to June. The city is humid as ample rainfall keeps people on their toes. The conditions are sticky as the skies bear moisture-laden clouds that block the sun rays. Temperatures are uncomfortable during the day, while the nights seldom fare better. Thunderstorms and rainstorms are frequent in the wet season that makes the overall conditions even more uncomfortable.

Kumasi is prone to dust and sandstorms, tornadoes, wildfires, and haze during the dry season and rainstorms in the wet season. The dry season brings northeasterly trade winds that bring fine dust from the Sahara. The Harmattan haze in the dry season can severely drop visibility with the humidity at a low of 15%. The winds also cause dust storms, aid fires, and bring tornadoes to the region. Humans and animals suffer from respiratory and skin ailments due to the dry nature of the winds. Rainstorms are frequent during the wet season.

January is usually the coldest and driest month of the year in Kumasi, Ghana, with the average low temperature at a mild 20.6°C (69.1°F). Weather in January »

February is the hottest month in Kumasi, Ghana, with the average temperatures in the range of 22.2°C (72°F) to 33.3°C (91.9°F). The sunshine lasts for a daily 6.7 hours. Weather in February »

March is the beginning of the rainy season in Kumasi, as the city records an average of 137.2mm (5.4"). The heat increases rapidly with the rise in humidity. Weather in March »

April is the sunniest month of the year in Kumasi, with 6.8 hours of daily sunshine. The average temperatures range from 22.2°C (72°F) to 32.2°C (90°F). Weather in April »

May sees heavy rainfall in Kumasi with the arrival of the African monsoon. The rain gauge accumulates 175.3mm (6.9") within ten wet days in the month. Weather in May »

June is the only month to register 13 hours days with cloudy skies that limit the sunlight to only 4.9 hours. The land boasts of greenery with the monsoon at its peak. Weather in June »

July is humid and wet in Kumasi with average temperatures in the 21.1°C (70°F) to 27.8°C (82°F) zone. The skies are mostly cloudy, and the sunshine lasts for only 3.3 hours. Weather in July »

The average temperatures are in the 21.1°C (70°F) to 27.8°C (82°F), with nights often recording the lowest temperatures of the wet season. Weather in August »

September in Kumasi, Ghana, resumes the second half of the monsoon as the precipitation registers an increase to 165.1mm (6.5"). Weather in September »

October sees an increase in the sunshine in Kumasi with the passage of the peak of the monsoon season. The sunshine lasts for a daily 5.2 hours. Weather in October »

November marks the end of the wet season, with the precipitation registering a moderate 73.7mm (2.9"). The change of seasons occurs by the second half of the month. Weather in November »

December is the start of the dry season that witnesses scattered showers in the month. The average temperatures remain in the warm 20.6°C (69.1°F) to hot 30.6°C (87.1°F) range. Weather in December »

How much does it rain in Kumasi?

In Kumasi, Ghana, during the entire year, the rain falls for 128 days and collects up to 1402.4mm (55.2") of precipitation.

What is the driest month in Kumasi?

The month with the least rainfall in Kumasi is January when the rain falls for 2 days and typically collects 15.1mm (0.6") of precipitation.

What is the warmest month in Kumasi?

February is the warmest month in Kumasi, with an average high-temperature of 33.5°C (92.3°F) and an average low-temperature of 22°C (71.6°F).

What are the months with the highest UV index in Kumasi?

Months with the highest UV index in Kumasi are February through May, August through October, with an average maximum UV index of 12.

What month has the most sunshine in Kumasi?

With an average of 6.8h of sunshine, April has the most sunshine of the year.

What is the wettest month in Kumasi?

The month with the most rainfall in Kumasi, Ghana, is June when the rain falls for 17 days and typically aggregates up to 214.3mm (8.4") of precipitation.

When are the longest days in Kumasi?

June and July, with an average of 12.5h of daylight, are months with the longest days.

What is the coldest month in Kumasi?

With an average high-temperature of 27.7°C (81.9°F) and an average low-temperature of 21°C (69.8°F), August is the coldest month.

What is the month with the least sunshine in Kumasi?

August has the least sunshine of the year, with an average of 2.5h of sunshine.

What is the month with the shortest days in Kumasi?

The month with the shortest days in Kumasi, Ghana, is December, with an average of 11.7h of daylight.

What is the month with the lowest UV index in Kumasi?

December is the month with the lowest UV index in Kumasi, with an average maximum UV index of 10.
Average temperature - Kumasi, Ghana
Average rainfall - Kumasi, Ghana

The wettest month (with the highest rainfall) is June (214.3mm).
The driest month (with the lowest rainfall) is January (15.1mm).

Average rainfall days - Kumasi, Ghana

Months with the highest number of rainy days are June, September and October (17 days).
The month with the lowest number of rainy days is January (2 days).

Average daylight / Average sunshine - Kumasi, Ghana

Months with the longest days are June and July (Average daylight: 12.5h).
The month with shortest days is December (Average daylight: 11.7h).

The month with most sunshine is April (Average sunshine: 6.8h).
The month with least sunshine is August (Average sunshine: 2.5h).

Average UV index - Kumasi, Ghana

Months with the highest UV index are February, March, April, May, August, September and October (UV index 12).
The month with the lowest UV index is December (UV index 10).